[Equest-users] Heat Pump Efficiencies

[John Aulbach]

Why does this look like the formulae from the ACM Manual from the California Energy Commission??



John R. Aulbach, PE, CEM
Senior Energy Engineer

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PartnerEnergy
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________________________________
From: Demba Ndiaye <Demba.Ndiaye at setty.com>
To: Carol Gardner <cmg750 at gmail.com>; Bassam Yammine <byammine at flowgroup.ca>
Cc: "equest-users at lists.onebuilding.org" <equest-users at lists.onebuilding.org>
Sent: Wed, March 24, 2010 10:20:08 AM
Subject: Re: [Equest-users] Heat Pump Efficiencies


Carol, 
 
I would bet it is the way eQuest determines, in some instances (don’t know which ones), EIR without accounting for fan energy. 
 
Any other thoughts?
 
Demba.
 
From:equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Carol Gardner
Sent: Wednesday, March 24, 2010 12:12 PM
To: Bassam Yammine
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Heat Pump Efficiencies
 
I also found some formulas when tooling around in the archives the other day and could love to get comments, if any about their utlity:

EIR=(1/EER-0.012167)/((1/3.413)+0.012167)
and
EIR=((1/SEER*0.778+1.4)-0.012167)/((1/3.413)+0.012167)

Anyone remember these that knows the source and utility? Is there one for HSPF?

Carol
On Wed, Mar 24, 2010 at 7:50 AM, Bassam Yammine <byammine at flowgroup.ca> wrote:
Hi Michael, to modify the EIR (which is in Btu/Btu) in the detailed mode, click on the Air-Side HVAC icon at the top of your screen, then double click on the heat pump. Under the cooling and heating tabs you will find a Unitary Power tab where you can change your EIR.
 
Regards,
Bassam
 
From:equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of M. Shields
Sent: Wednesday, March 24, 2010 6:59 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Heat Pump Efficiencies
 
Hi All,
 
I am still fairly new to equest and I am having a bit of trouble with setting up my HVAC.  I created a building model using the equest wizard and now I have made a number of changes within the detailed DOE2 interface.  The building uses air source heat pumps for the HVAC and I would like to change the EER/COP values without going back to the wizard, but I cannot figure where these values are stored.  Is there an easy way to make changes like that within DOE2?
 
Thanks,
Michael Shields
 
____________________________
Michael Shields
Facility Strategies Group
2222 Gold Hill Road, Suite 5
Fort Mill, SC 29708
Phone: 803-493-4507
Fax: 803-548-2511
Email: mshields at fstrategies.com
 

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